A few years ago, I took a voice acting class that focused on audio book reading. One of the most important lessons I learned in that class was not to belittle the material. No matter what you, as a reader, may think about the book--even if it's something you'd never read yourself, like a Harlequin romance--you must deliver it to your audience in a respectful way. You have a responsibility to the people who pay money and time for that audio book.

Many writing instructors tell their students to always read their work aloud, because words (especially dialogue) that seem clever on the page may ring false in your ear. I still have a tough time writing about sex or violence (how much should you describe? How much detail is required for clarity, and when do you cross the line?), but I'm working on it. As shown here.